Version 1.3.1. Fixed download bug.

git-svn-id: https://plugins.svn.wordpress.org/delightful-downloads/trunk@822754 b8457f37-d9ea-0310-8a92-e5e31aec5664
Clear transients on settings save.

git-svn-id: https://plugins.svn.wordpress.org/delightful-downloads/trunk@822755 b8457f37-d9ea-0310-8a92-e5e31aec5664